jurop LC 420 User Manual

INSTALLATION, USE AND MAINTENANCE MANUAL – LC
REV. 12
10-12-2021
14 / 44
Jurop SpA
Via Crosera n° 50
33082 Azzano Decimo, PN (Italia)
TEL. +39 0434 636811 FAX. +39 0434 636812
http://www.jurop.it
e-mail: info@jurop.it
3
5
4
6
1
2
• A limited speed ratio allows a longer belts life while reducing
stress on the shafts. When possible, prefer:
− Pulleys with a pitch diameter bigger than the one indicated;
− Motors or power take-offs with a speed similar to the one of the
pump.
LC 300-420
LC 580-750
Max. Speed
1300 rpm
1200 rpm
Max. Pressure
2 bar abs
1,5 bar abs
T. Max.
3000 N
3500 N
Drive min. pulley p. diam
180 mm
180 mm
Grooves
3
3
Belts
SPB
XPB
C) Hydraulic drive
LC 300
LC 420
LC 580-750
Displacement
61 cc/rev
72 cc/rev
108 cc/rev
Operating pressure (max. vac.)
125 bar
135 bar
140 bar
Operating pressure (1 rel. bar)
150 bar
175 bar
190 bar
Flow
83 l/min
98 l/min
136 l/min
Max pressure draining line
5 bar
5 bar
5 bar
Max. pressure motor exhaust
5 bar
5 bar
5 bar
Max pressure
200 bar
200 bar
220 bar
• Fluid: mineral oil for hydraulic systems in compliance with ISO/DIN.
Temperature
Optimum viscosity ale
Max. viscosity allowed
-20 / +80 °C
12 – 100 cSt
750 cSt
• Filtration: class 19/16 contamination according to ISO 4406 to be
obtained with a ßx = 75 filter.
• Check circuit connections: they must be applied in the same
rotation direction as that indicated by the arrow on the pump front
flange.
Pic. 4.10
• Draining: connect directly to the tank above the maximum oil
level. Operating without draining line may damage the motor.
• Distributor: open-centre distributor in central idle position
(vacuum pump off). It must be equipped with an adjustable
overpressure safety valve.
• Motor pipeline: outlet pipe must not be of a smaller diameter than
that of the inlet port. Inlet pipes always have a diameter smaller than
outlet pipes. Choose preferably flexible pipes to avoid vibration
transmission.
• Tank: with suction pipe and return separated by baffles. If
necessary, use a heat exchanger to avoid oil heating above 70-80°C
and protect it from extreme pressure with a pressure relief valve.
Minimum approximate capacity: as twice as the circulation flow.
• Starting-up: be sure that the system is well cleaned and pour oil
into the tank and into the motor housing (necessary to lubricate the
internal bearings).
• Vent the circuit and adjust the overpressure safety valve to the
lowest possible value.
• Check the oil tank level.
• Increase pressure and rotation speed until operating values are
reached.
Pic. 4.11
1
Hdr pump
4
Oil filter
2
Distributor
5 *
Heat exchanger
3
Hdr motor
6 *
Safety valve
* optional components
• The machine/system manufacturer is responsible for dimensioning
the lines.
The machine/system manufacturer is responsible
for dimensioning the lines.
5.1. Starting-up of the pump
Lubrication
• Check oil levels in gearbox and side mounted tank.
• Check the oil level in the gear box (if the pomp is provided with it).
• In order to choose the most suitable oil, see paragraph 2.6.
Cooling
• Unscrew the vent valves on the housing and recycling pump, pour
the cooling fluid through the port near the exchanger.
• Screw the vent valves and start running the cooling system in
order to expel the air bubbles inside it. Then, adjust the level by filling
up the expansion tank on the exchanger: it must be half filled
(approximately).
5. Start up
DRAINING
PORT

jurop LC 420 Specifications

General

Brand	jurop
Model	LC 420
Category	Water Pump
Language	English